github.com/anthropics
Start Here
CLI
anthropics/claude-code
The Claude Code CLI itself. Issues = report Claude Code bugs. Releases page = what changed when.
YOUR BACKEND
anthropic-sdk-typescript
TypeScript SDK. What your Railway backend uses to call Claude.
anthropic-cookbook
Working code examples — tool use, RAG, vision, sub-agents. The fastest path to "how do I do X."
modelcontextprotocol/servers
Reference MCP servers — filesystem, GitHub, Postgres, Slack, browser, etc.
SDKs
Python · TypeScript · Go · Java · Swift · Ruby. Pick by your stack.
All langs
Plugins
anthropics/claude-plugins-official · claudemarketplaces.com
Growing
Skills
anthropics/skills · agentskills.io · skillsmp.com
Community
Education
prompt-eng-interactive-tutorial · anthropic-courses · cookbook
CI / Automation
claude-code-action — run Claude in GitHub Actions on schedule or PR.
Research
evals · long-context-prompting · paper-tied repos
Pro Tip
Star
github.com/anthropics. New repos get added quietly. A monthly browse is the easiest way to discover what's new.
If You're Stuck
"How do I [do X] with Claude?" → check the cookbook first. 80% of "how do I" questions have a working example there.
When you'd reach for each
Engage Anthropic via
- Bug in Claude Code
→ claude-code Issues
- Building a backend
→ anthropic-sdk-typescript
- "How do I do X?"
→ anthropic-cookbook
- Adding a new tool
→ MCP servers + spec
- Bug reports
Repo Issues — reproducible only
- Best-practices
Discussions tab on larger repos
- Small improvements
PRs — docs fixes, examples welcome
djEnterprises · AI consulting & iOS app studio